Just Plug them on For Your Collins Radio. It has a bias adjustment . Hi Voltage, Medium, and Heater. Can be on/off from the Radio unit. Just like 516F2 .solid state.
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Radio , Antenna and Accessories. Telp +62 812 990 9393 . Jln. Palem Kuning 18 Sektor 13 BSD City, Tangerang , Banten 15318 Indonesia. Email Address : winarno133@gmail.com
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